Brake-beam.



C. H. WILLIAMS, JR.

BRAKE BEAM.

APPLICATION man JULY 13, 1914.

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a W a LEQQAUSQ lameness To all whom it we (17 concern: 5

Be it known that 1, CHARLES H. WIL- LLA'MS, Jr, a citizen-cf the Uuitedfi at n r siding at the city of Cook, and State of Illinois, have invented a certain new and useful Improvement in Brake-Beams, of which the following is a full,elear,and exact description,such as will. enable others skilled in the art to which it a ppertains to make and use the same, refer ence being had to the accompanying drawings, forming part of this specification.

This invention relates to certain new and useful improvements in brake beams, the object being to construct a brake beam in such fashion that the parts most liable to wear may be renewed.

The economy of brake beams, and particularly of integrallycast brake beams, is seriously affected by the wear of the trunnion ends on which the adjustable brake heads are mounted.

The subject matter of this invention was originally disclosed in my copending application, Serial Number 769,457, filed May 23, 1913, patented August 11, 191 No. 1,106,765.

In the drawings, Figure 1 represents a detail view of one end of a brake beam illus trating one form of mounting of the brake head trunnion, the same being shown partly in section. Fig. 2 is a sectional view taken on line 22 of Fig. 1. Fig. 3 illustrates a i'nodified form. Fig. l is a section on line H thereof. Fig. is a second modified form. Fig. 6 is a section on line 6-6 thereof. F ig. 7 shows another form. Fig. 8, a section takenon line 8-8 thereof. Fig. 9 shows a fifth form. Fig. 10 is a section 911 line l0-10 thereof. While the forms illustrated show portions of integrally cast brake beams, it is obvious that my invention is equally applicable to built-up brake beams.

By reference to Figs. 1 to 6 inclusive, it will be understood that the brake beam end 1 is provided with alongitudinally directed pocket 2, which, of course, may be cylindrical or of other conformation. The removable trunnion member l is formed scparatcl y and has the bearing portion 5 adapted for the reception of the brake head and a reduced arbor portion 6. The arbor portion is RAKE-Ben n:

' Specification of LettersPateut.

adapted to fit within the Chicago, county; .Qili

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. r e 2 hav close contact therewithat all sides so as to n. c afirinsuppc .ofii hc truninoaagains thrusts in any direction. It will be seen that the inner extremity of the bearing portion 5 forms a shoulder adapted to abut the end of the brake beam portion 1, thereby affordmg a solid seat for receiving end thrusts which may be imposed upon the trunnion, and thus taking all strain from the rivets'or other fastening devices when such end thrusts are directed inwardly.

As illustrated in Figs. 1 and 2, the trunnion member is secured in position by means of the rivets 7 passing through the walls of the arbor member and the pocket.

In the form illustrated in 3 and 4, the pocket is internally screw threaded, and the arbor member externally threaded, so that the trunnion member may be screwed into the pocket, where it is secured in place by the rivet or other suitable detachable means.

In Figs. 5 and (5, the trunnion illustrated has a wall closing its inner end, and the attachment is provided by a boltS seated in said wall and in the end wall of the pocket. Relative rotation oi the trunnion member and the beam prevented by a longitudinal spline 9 formed on the arbor and adapted to engage in a suitable slot formed in the inner wall of the pocket. 7

The fonns illustrated in Figs. 7 to 10 in elusive are provided with longitudinally dircctcd lugs or cars. In the form illustrated in Figs. 7 and 8, these lugs 11 pass tl'irough apertures in the end oi? the brake beam, and are bent over to hold the trunnion in place. 'ihe form illustrated in Figs. 9 and 10 has the trunnion secured to the brake beam by means of the bolt 12 missing through the lugs and through the end of the brake beam.

In all 01'. the forms, it is obvious that the trunnion member is removable outwardly in a direction longitudinally of the beam, by virtue oi. which removal and replacement may be made without unhanging the beam.

All of these forms provide a construction wherein the trunnions constituting the mountings for the brake heads are individually removable From the beam. thereby permitting their replacement when worn or broken, without making it necessary to disene a o Ga ma were? sewer 'QQB Q Q rearms trunnion, and fastening devices for hold- [a4 341T )WAILABLE card the entire beam or tietech it from the truckfor repair.

What. I claim is:

-, cast metal brake beam having e recess renewable head, said trunnion having shoul-t. .ders 'onfaces, seated directly against the- 1 end face of the beam around said recess which thereby affords a solid seat/for receiving inwardly directed end thrusts on the ing the trunnion in v position, which fastenm devlces are'neIreWed'IJirmi inner: 1y directed end thrusts on the trunnion by virtue ft me n eme s e i nihe mmnionen'dthe end feceof 't 'e .b'eer'n; Z 'In testimony whereof I' herlintoaffix my signature in the presence of two Witnesses, 29

this first day of J uly, 1914.

Witnesses T. ALKER, M. Hu uooN 

